c++ primer 习题10.25

1. #include <iostream>
2. #include <sstream>
3. #include <string>
4. #include <list>
5. #include <fstream>
6. #include <map>
7. #include <vector>
8. #include <utility>
9. #include <iomanip> //控制格式输出的
10. #include <set>
11. #include <algorithm>
14. using namespace std;
16. std::ifstream &open_file(ifstream &in ,const string file_name)
17. {
18.     in.close();
19.     in.clear();
20.     in.open(file_name.c_str());
21.     return in;
22. }
25. int main(int argc,char **argv)
26. {
27.     vector<string> want_book;
28.     set<string> have_book;
30.     string bookName;
32.     cout<<"want book:"<<endl;
34.     while(cin>>bookName)
35.         want_book.push_back(bookName);
37.     cin.clear();
39.     cout<<"hv read book:"<<endl;
41.     while(cin>>bookName)
42.         have_book.insert(bookName);
44.     cin.clear();
46.     cout<<"Input which book you want:";
48.     cin>>bookName;
50.     vector<string>::iterator iter=find(want_book.begin(),want_book.end(),bookName);
51.     if(iter!=want_book.end())
52.         want_book.erase(iter);
54.     have_book.insert(bookName);
56.     for(vector<string>::iterator viter=want_book.begin();
57.         viter!=want_book.end();++viter)
58.     {
59.         cout<<"want book:"<< *viter<<" ";
60.     }
61.     cout<<endl;
63.     for(set<string>::iterator siter=have_book.begin();
64.         siter!=have_book.end();++siter)
65.     {
66.         cout<<"have read;"<<*siter;
67.     }
68.     cout<<endl;
69.     cout<<"forget read input book:";
70.     cin>>bookName;
72.     if(have_book.count(bookName))
73.         have_book.erase(bookName);
75.     want_book.push_back(bookName);
78.     for(vector<string>::iterator viter=want_book.begin();
79.         viter!=want_book.end();++viter)
80.     {
81.         cout<<"want book:"<< *viter<<" ";
82.     }
83.     cout<<endl;
85.     for(set<string>::iterator siter=have_book.begin();
86.         siter!=have_book.end();++siter)
87.     {
88.         cout<<"have read;"<<*siter;
89.     }
90.     cout<<endl;
93.     return 0;
94. }